Contents

An ex-Confederate Army officer (Richard Boone) named Jim Lassiter, who has been out for revenge against Apache Indians who massacred his family, recovers a stolen U.S. Armyrepeating rifle from some Apaches he has killed; as the Apache have proven formidable with lesser weaponry, there is cause for concern should they become equipped with such superior firepower.

After blasting their way through bandits and Apaches, they discover Colonel Pardee, another former rebel soldier (Edmond O'Brien), has set up a new Confederate headquarters, and is selling guns to the Apaches, including the ones who slaughtered Lassiter's family.

The woman, who is called Sally, saves his life, so Lassiter puts aside his hatred. He and Franklyn sacrifice themselves to save Sally and the Army captain Haven while holding off Pardee and his men.

The posters used the same approach to billing as Warner Bros. had in 1948's Key Largo, for which Humphrey Bogart had been listed first but Edward G. Robinson was placed in the middle of the three above-the-title leads with his name elevated higher than the other two (the third name being Lauren Bacall's). In the case of Rio Conchos, Whitman was billed as Bogart had been, with Boone in Robinson's middle slot and Franciosa in Bacall's spot, with his name listed third going left to right and at the same height as Whitman's. Quite differently, however, Boone was billed before Whitman in the movie itself, with each name appearing onscreen one at a time.